Select the best option : - a testable explanation that's supported or refuted is called a/ a. variability. / b. hypothesis. / c. reaction./ d. experiment.

hypothesis
A hypothesis is a supposition made by the scientist. In order for a hypothesis to be a scientific hypothesis, the scientific method requires for it to be tested. If a hypothesis cannot be tested, it cannot be scientific hypothesis. It is important to state the hypothesis clearly at the beginning of a scientific paper. This enables the reader to understand the problem. 

Breacking the law and lazy